Update 2018-02-28-carpentrycon-accomm.md
Update 2018-02-28-carpentrycon-accomm.md

bringing in Fotis's changes
ErinBecker/website,ErinBecker/website,gvwilson/website,swcarpentry/website,gvwilson/website,rgaiacs/swc-website,ErinBecker/website,swcarpentry/website,gvwilson/website,gvwilson/website,ErinBecker/website,ErinBecker/website,rgaiacs/swc-website,swcarpentry/website,swcarpentry/website,swcarpentry/website,rgaiacs/swc-website,gvwilson/website,rgaiacs/swc-website,rgaiacs/swc-website